JP2008517340A5

JP2008517340A5 -

Info

Publication number: JP2008517340A5
Application number: JP2007537318A
Authority: JP
Filing date: 2005-08-04
Publication date: 2008-09-18
Anticipated expiration: 2025-08-04

Claims

In an apparatus for adjusting the direction of a processing axis (A6) of a processing tool (35) that rotates about a processing axis for processing an ophthalmic lens,
The adjustment is carried out around at least one swivel axis (A7) extending substantially transversely to the machining axis, the lens being fixed to a support that is rotatable around a lens rotation axis Has been
The device is
Swiveling means that allows a machining axis (A6) of the machining tool (35) to perform a pivoting motion (PIV) about the swivel axis relative to the rotational axis of the lens support;
Adjusting means for adjusting the angular position of the processing tool (35) about the swivel axis;
It has
The device has a first degree of freedom (ESC; TRA) of movement different from the pivot (PIV) of the machining axis (A6) of the machining tool (35) about the swivel axis. ) Comprises first movement means for allowing movement relative to the lens (L) to be excavated or vice versa (the lens to be excavated relative to the processing tool (35)) (L) comprises a first movement means for allowing movement);
Due to the first degree of freedom in the relative movement of the processing tool (35) with respect to the lens (L) to be excavated, the adjusting means is adapted to move the processing tool (35) around the swivel axis. Device arranged to control the turning (PIV) of the machining axis (A6).

The machining tool is pivoted about the swivel axis about the machining axis (A6) of the machining tool (35), and has a movement different from that of the first degree of freedom of movement (ESC; TRA). With a second degree of freedom (ESC; TRA), it is provided with a second movement means for allowing movement relative to the lens, or vice versa (the lens moves relative to the processing tool A second movement means for enabling
There, the adjusting means is engaged and engaged by using the second degree of freedom (ESC; TRA) of the movement of the processing tool (35) with respect to the lens (L) to be excavated. The device according to claim 1, wherein the device is detachable.

The adjusting means includes
A first portion (38) related to the processing tool (35);
A second part (50) independent of the processing tool (35),
The two parts can be engaged and disengaged with respect to each other by a second degree of freedom of engagement (ESC; TRA) in relative motion. Equipment.

The motion first degree of freedom (ESC) is Ri substantially transverse der to said working direction,
Second degree of freedom of the motion (TRA), in a direction that is substantially parallel to the axis of the lens, substantially any one of claims 1, characterized in that the axial 3 single The device according to item .

The motion first degree of freedom (TRA), in a direction that is substantially parallel to the axis of the lens, Ri substantially axially der,
The apparatus according to claim 1 , wherein the second degree of freedom of movement (ESC) is substantially transverse to the machining direction .

The processing tool (35) is carried by a body (34) installed to pivot about the swivel axis (A7) in the module (25), the module (25) itself being first Is movable with respect to the lens with a first degree of freedom in the movement and secondly with a second degree of freedom in the movement, or vice versa (the lens with respect to the module (25) The device according to claim 2, wherein the device is movable.

The body (34) of the processing tool (35) comprises an adjustment finger or lever (38; 60) that is substantially transverse to the swivel axis (A7). The apparatus as described in any one of 1-6 .

The adjustment means is a cam or ramp; apparatus according to any one of claims 1 to 7, characterized in that it comprises a (51 60).

The adjusting means comprises stop means (50) for preventing the machining tool from turning about the swivel axis ;
It said stop means (50) An apparatus according to any one of claims 1 to 8, characterized in that to operate the friction braking of the turning of the processing tool.

10. The apparatus according to claim 9 , wherein the braking means of the machining tool prevents the tool from turning with respect to a torque that is 30 Newton-centimeters (N · cm) or less.

A device for trimming and processing an ophthalmic lens, comprising the device for adjusting the processing direction according to any one of claims 1 to 10 .

Equipped with a polishing machine,
The polishing machine is
One or more grinding wheels arranged to rotate on a shaft substantially parallel to the axis of the lens;
Movement imparting means for imparting a relative movement in movement between the lens and the grinding wheel along their axes, the movement imparting means relative to the lens in the axial direction of the processing tool Movement imparting means forming said means for providing movement of
The apparatus according to claim 11 , comprising:

The second support of the processing tool is installed on the grinding wheel shaft for swiveling about the axis of the shaft, the swivel forming the degree of freedom in lateral movement. The device according to claim 12 , characterized in that:

Processing apparatus according to any one of claims 1 to 13, characterized in that it comprises a drilling in the lens.

A method for adjusting the direction of a processing axis of a processing tool (35) for processing an ophthalmic lens (L),
The direction is adjusted about at least one swivel axis (A7) that is substantially transverse to the machining axis, and the lens is rotatable about the rotation axis of the lens. Fixed to the support,
A pivot (PIV) of the machining axis (A6) about the swivel axis with respect to the rotational axis of the lens support;
In order to adjust the direction of the machining axis (A6), the pivot (PIV) of the machining axis (A6) about the swivel axis is a first relative movement in movement (ESC; TRA) or excavated. Is controlled by a first relative movement (ESC; TRA) in the inclination of the processing tool (35) relative to the lens (L), the first relative movement (ESC; TRA) being controlled by the swivel axis A method characterized in that it is different from the pivot (PIV) of the machining axis (A6) of the machining tool (35) around.

The turning means (PIV) of the machining axis (A6) is engaged and disengaged by a second relative movement (TRA) of the machining tool (35) with respect to the lens (L) to be excavated. The second relative movement (TRA) is different from the pivot (PIV) of the machining axis (A6) of the machining tool (35) about the swivel axis, The method according to claim 15 , wherein the method is also different from the displacement (ESC).

Displacement of said 1 (ESC) is Ri substantially transverse der the relative machining axis (A6),
The second displacement (TRA) is substantially axial in direction (A3), substantially parallel to the axis (A2) of the lens (L) to be excavated. The method according to claim 15 or 16 .

Displacement of said 1 (TRA) is substantially parallel to the axis (A2) of the lens to be drilled (L), in the direction (A3), Ri substantially axially der,
17. A method according to claim 15 or 16 , characterized in that the second displacement (ESC) is substantially transverse to the machining axis (A6) .

The machining axis (A6) of the machining tool (35) is swiveled (PIV) about a swivel axis to adjust its angular position by a cam or ramp (51; 60). The method according to any one of claims 15 to 18 .

Said pivoting of the machining axis (A6) of the processing tool (35) of about said swivel axis (PIV) is in any one of 19 claims 15, characterized in that the or fixed is stopped The method described.

The turning (PIV) of the machining axis (A6) of the machining tool (35) is stopped or fixed by a friction brake enabling such turning, and the turning of the machining axis (A6) 21. The method according to claim 20 , wherein the direction is adjusted by applying a force that resists the anti-sliding torque exerted by the braking.

The method according to any one of claims 15 to 21 , wherein the processing in the lens comprises excavation.